50 



Observations on Parasites and Parasitic D 



iseases 



The annexed wood-engravings— Figs. 6 and 7— are illustrative 

 ol the dippnig bath and pens referred to by Mr. Annand. They 

 will be found to materially assist in explaining the details of the 

 process. 



(S^ 



Fig. 6 shows a side-view of the yards, " dip," &c. 

 iA. Yards into which the sheep are first brouo-ht 



B. The "dipping pen." This is furnished with a moveable floor, e, 

 secured by a bolt, which being withdrawn causes the floor to tilt, and 

 precipitate the sheep into the bath beneath. 



